Spark plug heat ranges

It's just a six

It's just a six

Super Member
Just curious if anyone here has had a knock retard issue & changed there plugs to a colder heat range & the knocking went away?..Or got less knock retard?
 
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gjp

gjp

another post whore
Re: Spark plug heat ranges

I will be trying that this weekend. Right now I have a max of 6 deg of knock. I have ngk ur5's. I was told ngk ur6's were colder. I will change them out and see.
 
It's just a six

It's just a six

Super Member
Re: Spark plug heat ranges

gjp said:
I will be trying that this weekend. Right now I have a max of 6 deg of knock. I have ngk ur5's. I was told ngk ur6's were colder. I will change them out and see.
Click to expand...

Cool ...let us know if there is any improvement or not.
Thanks! :tup:
 
It's just a six

It's just a six

Super Member
Re: Spark plug heat ranges

gjp said:
I will be trying that this weekend. Right now I have a max of 6 deg of knock. I have ngk ur5's. I was told ngk ur6's were colder. I will change them out and see.
Click to expand...

So... did you swap out the plugs this weekend?

Let us know! :tup:
 
gjp

gjp

another post whore
Re: Spark plug heat ranges

I went to do it and noticed One plug looked bad. They are all new but one had a crack on it and I did not want to install. I ordered one because I cant find anyone who stocks the ur6's. I did do a few runs in my truck with the 5's. I am seeing about 7 deg of KR at 10lbs of boost. Fore some reason my truck is only making 10lbs even though my greedy guage says 16lbs. Just something else to try.. I also will try some 100 oct gas too to see if my Kr goes down. Its 4.80$ for the 100 so I will add 10 gallons to a 1/4 tank. Also picked up a set of taylor wires.
 
It's just a six

It's just a six

Super Member
Re: Spark plug heat ranges

gjp said:
I went to do it and noticed One plug looked bad. They are all new but one had a crack on it and I did not want to install. I ordered one because I cant find anyone who stocks the ur6's. I did do a few runs in my truck with the 5's. I am seeing about 7 deg of KR at 10lbs of boost. Fore some reason my truck is only making 10lbs even though my greedy guage says 16lbs. Just something else to try.. I also will try some 100 oct gas too to see if my Kr goes down. Its 4.80$ for the 100 so I will add 10 gallons to a 1/4 tank. Also picked up a set of taylor wires.
Click to expand...

Did you get to take it out again to test it anymore?
 
gjp

gjp

another post whore
Re: Spark plug heat ranges

Yeah I put in the plugs. I was out friday messing around and I had 96oct gas in it. I was getting almost no KR. It would spike to 2* once in a while. It was a cold night too. I will run the gas down and try it with 91 in it. It feel a lot faster on the high end with the ur6's. My wife was in the car and was getting tired holding the laptop. I will go out and play again next weekend. BTW I ate up a integera, rt dodge dakota, older (80's) mustang, and a 330ci bmw. No one else wanted to play. :( Oh and my wife love my truck too. After feeling what the better gas feels like I got to get Alky soon.
 
gjp

gjp

another post whore
Re: Spark plug heat ranges

The funny thing is it feels like it has less power at half throttle but more at wot??? I probably still have Kr with 91.

Does any auto store oct boost work??? for 8$ a tank it is a lot cheaper then 8 gallans of 100oct @4.79 a gallon.
 
It's just a six

It's just a six

Super Member
Re: Spark plug heat ranges

Glad it is work/running better.
Where do you buy the ur6 spark plugs & what brand are those? Is that the full part number,ur6 ?
Thanks
I heard & read (on other forums) the Torco brand octain booster works the best .
 
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